NPC SM5852FS Datasheet
SM5852FS
NIPPON PRECISION CIRCUITS INC.
OVERVIEW
The SM5852FS is a digital signal processor IC that
performs DDBB (digital dynamic bass boost)
processing for use in digital audio reproduction
equipment. It is designed for use with a 44.1 kHz
sampling frequency.
FEATURES
■
2-channel processing
■
Improved DDBB mode channel separation
■
6 input-level dependent dynamic gain
characteristics
■
Serial input/output interface
2s complement, MSB first, 16-bit
■
384fs system clock
■
23 × 23-bit multiplier/30-bit high-precision
accumulator
■
TTL-compatible input/output
■
3.2 to 5.5 V operating voltage range
■
16-pin SOP
■
Molybdenum-gate CMOS
Digital Dynamic Bass Boost LSI
PINOUT
LRCI
1
BCKI
CLK
VSS
RSTN
TESTN
MUTEN
2
DI
3
4
5
6
7
8
SM5852FS
PACKAGE DIMENSIONS
16-pin SOP (Unit: mm)
DB/DS
16
MOD2
15
MOD1
14
OPT
13
VDD
12
LRCO
11
BCKO
10
DOUT
9
ORDERING INFOMATION
Device Package
SM5852FS 16pin SOP
0.635±0.15
1.27±0.15
10.16±0.3
10.5 MAX
0.4±0.15
5.5±0.3
2.0±0.2
0.1±0.1
8.0±0.3
0 to 15
0.17±0.05
6.8±0.3
8.0±0.3
NIPPON PRECISION CIRCUITS—1
BLOCK DIAGRAM
SM5852FS
LRCI
BCKI
DI
CLK
RSTN
TESTN
MUTEN
Input data
Interface
System
Clock
Sequence
Control
Mute
Control
DSP Block
Output data
Interface
VDD
VSS
LRCO
BCKO
DOUT
DB/DS
OPT
MOD1
MOD2
Mode Control
NIPPON PRECISION CIRCUITS—2
PIN DESCRIPTION
SM5852FS
Number Name I/O
1 LRCI Ip Input data sample rate (fs) clock input
2 BCKI Ip Bit clock input
3 DI Ip Serial data input
4 CLK I Clock input
5 VSS – Ground
6 RSTN Ip System reset initialization. Reset when LOW.
7 TESTN Ip Test mode input. Testing when LOW.
8 MUTEN Ip Mute input. Muting when LOW.
9 DOUT O Serial data output
10 BCKO O Bit clock output
11 LRCO O Output data sample rate (fs) clock output
12 VDD – 3.2 to 5.5 V supply
13 OPT Ip Not used. Tie HIGH for normal operation.
14 MOD1 Ip
15 MOD2 Ip
16 DB/DS Ip
1
Gain characteristics switch inputs.
MOD1 MOD2 DB/DS Gain mode
LOW LOW LOW 18 dB
LOW LOW HIGH 16 dB
LOW HIGH LOW 14 dB
LOW HIGH HIGH 12 dB
HIGH LOW LOW 10 dB
HIGH LOW HIGH 6 dB
HIGH HIGH LOW Off
HIGH HIGH HIGH Off
Description
1. Ip = Input pin with pull-up resistor. Accordingly, they can be left open for HIGH-level input.
NIPPON PRECISION CIRCUITS—3
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−
−
SPECIFICATIONS
Absolute Maximum Ratings
V
= 0 V
SS
Parameter Symbol Condition Rating Unit
Supply voltage V
Input voltage V
Storage temperature T
Power dissipation P
Soldering temperature T
Soldering time t
Recommended Operating Conditions
V
= 0 V
SS
Parameter Symbol Condition Rating Unit
Supply voltage V
Operating temperature T
DD
IN
stg
D
sld
sld
DD
opr
SM5852FS
0.3 to 7.0 V
V
− 0.3 to V
SS
3.2 to 5.5 V
+ 0.3 V
DD
55 to 125
250 mW
255
10 s
40 to 85
° C
° C
° C
NIPPON PRECISION CIRCUITS—4
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